Evaporation from the leaf at first sets up a pressure gradient between the

(1) Outside air and cytoplasm of cells of leaf

(2) Outside air and air spaces of the leaf

(3) Outside air and xylem cells of the leaf

(4) Outside air and palisade cells of leaf

1. Absorption of minerals and water from the soil and transport in the plants

2. Supplies water for photosynthesis

3. Evaporative heating

4. Maintains the shape and structure of the plants by keeping cells turgid

(1) 10 to 15 degrees

(2) Up to 70 degrees

(3) Up to 2 degrees

(4) Up to 50 degrees

(1) Guttation

(2) Transpiration

(3) Photosynthesis

(4) Respiration

(1) Maximize oxygen availability

(2) Maximize Carbon dioxide availability

(3) Minimize water loss

(4) Both B and C

(1) Half, double

(2) Twice, half

(3) One fourth, one third

(4) Twice, one third

(1) Minerals are charged particles

(2) Minerals are insoluble in lipid bilayer

(3) The amount of mineral is less in soil

(4) All of these

(1) Some ions also move in epidermal cells passively

(2) The active uptake of ions is partly responsible for the water potential gradient in the roots.

(3) Uptake of water by the roots is through osmosis

(4) Transport proteins of pericycle are control points where a plant adjusts the quantity and types of solute which will cross the cell membrane

(1) Endodermis

(2) Pericycle

(3) Epidermis

(4) Cortical cell

(1) Growing regions of the plant

(2) Enlarged cells

(3) Soil

(4) Root hair